Reinforced corrugated panel



4 Shee'tsLSheet l ug. 30, 1949.. E. R. swANsoN REINFORCED CORRUGATEDPANEL Filed Aug. 24', 1944 ug. 30, 1949. E. R. swANsoN REINFORCEDCORRUGATED PANEL 4 Sheets-Sheet 2 Filed Aug. 24, 1944 INVENTOR.

Aug. 30, 1949. E. R. svvANsoN REINFORCED CORRUGATED PANEL Filed Aug. 24,1944 4 Sheets-.Sheet 3 I N VEN TOR. Eczr E www0/z,

Aug. 30, 1949. E. R. swANsoN REINFORCED CORRUGATED PANEL 4 Sheets-Sheet4 Filed Aug. 24, 1 944 INVENTOR.

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Patented Aug. 30, 1949 v iliizsolzs 3 t nErNFoRonD. o'onnncrirnn'riimin-Earl R. Swanson, Chicago, llvfasslignor. tai-Standardv RailwaylEquipment rMainufactiiring Cornn pany, Chicago, Ill., a corporationofDelaware d l Y Y Applicatif'mV August ai, 1944; semina '550,926 Y iThe invention relates to railway car structures, and moreparticularly toend walls; drop lend gates; side doors; hopper doors; roofs and'otherpanels or structures comprising metallic plates or sheets formed'withy aplurality of Vsubstantially parallel corrugations. f

; ,Anobject of the invention is to reinforce such a corrugated plate orpanel by means positioned, preferably within the corrugations, so as not-to increase thespace between the bounding planes of the corrugatedpanel or structure. A Y Y* .,In a corrugated panel made oi relativelythin metallic sheets, a further object of the invention-isvtovstrengthen the compression side of the corrugated structurcwhich, when the parallel corrugatlons are` made of equal widthsand depths, is vweaker than the tension side of the corrugate platewhensubjected to beam action.

` A `further object is to provide a corrugated metallic sheet ofsubstantially the same thickness .throughout and to providereinforcements where .greater strength is needed. For instance, in the.end wallof alrailway car, greater strength is needed adjacent' thefloor of the car, and in a car roof,f greater strength is needed midwaybetween the end Walls of the car.

further object of the invention is to provide arelatively shallowstiifening means adjacent the apices of the corrugations which providegreater strengthV in the portions of the corrugat- 'ded platesunderextreme fibre stress, preferably .in both tension andY compressionsidesV of the corrugated plate,l without materially reducingthe.resiliency'of the corrugated structure.

f In many corrugated structures the corrugated panel extends between andis secured to opposite frame members ofthe car. In anend wall the Ycorrugated structure extends between spaced corn'er posts, which areframe members of the car. I gikwise,Y the roof extends between the sideWall A'side plates `(or top chords) which are frame members of the car.Likewise, the stiles of a door, i 'A further object of the invention isto extend the reinforcement for the corrugated panel between the framemembers of the car structure and secure them to the frame members,preferably so that the corrugated structure and the reinforcement willcooperate to increase the strength of the corrugated structure to resistloads imposed upon it.

'Afurther object is to dispose the metal of the corrugated plate and thereinforcement so that the' compression 4and tension sides of thecombined Ystructure' willbesubstantially equal, there- 6 claims. (c1."rosita-4ta) by; obtaining substantially maximum strength lperjpound ofmaterial used. j Other objects and advantages of the invention willv`appear in the following description thereof. Referring now to theaccompanyingdr'awing' forming part of this application and wherein likereference characters indicate like parts. A Figggl is an end elevationof a railway car einjbodying my invention. l

Fig. 2 is aside elevation of a car showninFigl... `Y ,I Eig--S is avertical section through "the 'end wallsheetshown in Fig. l in partialperspective; Fig.- 4 is a sectionvsimilar to Fig.v 3 showing' theyreinforcing member' in the form of an angle bar,"N Y 'I Y }Figis asection on the une 5 5 of Fig. s, partiallybrok'en away to show thereinforcing member and corner construction. 1 -I Fig.` Bis a verticalsection through a corrugated panel showing a modied form of theinvention. Eigf'lfi's a' section on the line i--l of Figf throughthecorner post of a car showingV an alternate manner lof attaching: sidesheathing thereto;

Fig. 8 is a section similarto Fig. 7.

Fig. 9 isy a View similar to Fig. 6; but ofV a rlied forni of theinvention. Y ""Fig. ,10 is -likewise a View similar to Fig. 6',of .astill further 'modified form of the invention. 1 f 'Fig.' 11 is avertical section through a portion of-a corrugated plate showing a stillfurther modification of reinforcing means therefor. Fig.12is amcdiiication of the structure shown Yin Eig. A11. I z

Figl. is afurther modiiicationand applica- "ti'onof the invention shownin Fig. 11. Fig. '14 is a horizontal section through a corner post rofthe car .showing a possible attache finent ofthe-end wall andreinforcing strip of Fig. 12,the`reto. i' A Fig'. 15 is a sectionsimilar to Fig. 14 of amodi'- fled attachment of4 the end Iwall .andreinforcing st'ripiof Fig. 11 thereto. y a

A Referring now'to Figs. l to 5. One of the cor- 'ner' post 'members cithe car is shown most clear.- ly inliig.. 5Jand comprises the angularlydisposed arm'sfd and g'along the outer edge of each of whichis formed aflange E, on the arm d, and fl 'onthe arm 5. These flanges extend atsubstani tiallyjrightangles to their respective arms and 'thus'there isformeda substantially VV-section portion -of modicorner post.

thereof, which flanges are formed on curves of substantial radius andeach of which terminates in a flat vertical edge portion which bearsfiatwise to the fiange 6 of the corner post. The car sheathing indicatedat l2 extends between the flanges 6 and Il and all are rigidly securedtogether, asby a. vertical row of rivets I3, or other suitable means.'lhev plate IB isy provided with a plurality of spaced horizontallyextending corrugations l which corrugations are deeper and wider attheir central portion and decrease in width and depth progressivelytoward either vertical edge and extend around the flanged margin Il ofthe plate and merge into the flat edge portion thereof. Thus thecorrugations extend from side to side of the plate and when the platei's secured to corner posts of a car, as illustratedact as beams andcarry any load imposed thereupon to said corner posts. It will be notedthat the end wall sheet crosses and bears against the ange' 1" of theVcorner post and is secured thereto',

as by a vertical row of rivets lll, or any other suitable manner, and'thereby cooperate 'with the corner post to form a boxstructural element.

Corrugated steelA ends for box cars are usually made of quite thinplate, the corrugations strengthening the plate'soA that it is adaptablefor railway oar use', and yet the inherent resilience of the material isnot destroyed, particularly when the corrugations are so designed thatthe sectionA modulus. and bending moment curves of the plate follow eachother as closely as practicable. When the corrugations are as wide asthose illustrated; herein, itY is apparent that a substantial forcedirected at either side thereof would cause it to fail, and, therefore,VI have shown T shaped reinforcing bars I5, with the stems thereof weldedon a line approximating the longitudinal center of the corrugations l5.Since it is not essential. that the stem be welded continuously to thebase of the corrugations and to save weight, I have shown the edges ofsaid stemscut away, asat t1, at spaced intervals and weldedtherebetween, as at IB, to the corrugations.

lt. will. be. notedY that the ange I9 of the reinforcing bar isdisposed' in the Same plane as the original. plane of the. sheet.Adjacent the ends of the bar. the stem is cut away to the flange sothatsaid flange crosses the flange 'l of the corner post. and may bebent around the corner and overlap the vertical margin of the sidesheathing l2, between it and the ange Il of the end wall. The ange I9of' each reinforcing bar is secured to the. ange 'I alternately to themeans for securing the base of. the corrugations thereto, and to. thisextent provides additional means for the secure attaching of the endwall to the corner posts.` Of course.. the outer margins of the flangesare secured to the ange B by the same means that secures` the sidesheathing and end wall thereto.

The modification shown in Fig. 4 illustrates an angle bar used as thereinforcing or stiffening member for the plate; otherwise the structureis the same as that heretofore described.

The modification shown in Fig. 6 illustrates a plate wherein the ridgesand valleys of the corrugations 2G are equal; in other words, the sameamount of material is disposed on opposite sides of the neutral axis ofthe plate, thereby equalizing its strength in either compression ortension. The reinforcements 21, therefore,

,are placed onv opposite sides of the plate, extend- Li D 4 ingoutwardly from the valleys of the corrugations so that the plate isstiffened, without destroying its balance.

Fig. 7 is a horizontal section through a corner of a car on the line 1-1of Fig. 6 and shows one flange 30 of the corner post elongated somewhatso that the ends of the flanges 3l of the T-stiifener and the; marginal:edge 3.2 of the side sheathing may terminate in the same vertical planeand atwise against the flange 30 and be secured thereto in anypracticable manner. The .iiange` 3.3.I of the-end plate then overlapsboth the margin 32 and end 3| of the stiener and is secured te both.Thus the thickness of the side sheathing is saved in the overall widthof the car.

Fig.. 8. illustrates.'V another method of accomplishingthe same resultas in Fig. 7, but wherein the end wall may be removed if desired withoutdisturbing the fastening means for securing the side sheathing to theflange of the corner post, said ange being extended somewhat for thispurpose.

Fig. 9 is: a modification of the structure shown in Fig. 3. but whereinthestiffening bar 35 is proportioned so that its mater-iat compensatesfor the unequal size of the corrugations and thereby disposes the same:amount of material on oppositesides of theneutrali axis of the plate.

In Fig. 1:0 the ridges andvalleys ofthe corrugations in the plate areequal, and the stiifening-v member 36 shown is that of a Zebar whichprojects from the valleys of the corrugations on opposite sides ofthesheet, similarly. equalizing the material on opposite sides of theneutral axis.

Fig. V11' shows a means of reinforcing a corrugated metallicK platewherein the corrugations are of the same width and depth and thethickness ofl the reinforcing strips maybe varied according to thestrength requirements of the plate. The corrugated plate is shown at'4E) and the reinforcing strips or plates at; 4l, which may or may notextendthe full length of the corrugations depending upon the sectionmodulusl requirernent. Since greater strength is, neededA t0- ward thebottom of the plate, when used as a wall for retaining a load), the,thickness of the reinforcing plates 4l may be progressively increasedfrom top to, bottom of the corrugated plate thereby progressively addingstrength thereto. T hese reinforcing, plates Ilv are preferably on theoutside of the corrugated plate so as to obtain greater increase instrength from same, being farther from the neutral axis, but they may beplaced on the inside of the corrugated plate if clearance necessitates.This same result may be obtained by using reinforcing strips of the samethickness of material but ofI progressively increasing width.

In Fig. 12 the corrugations are unequal in width, those (42) pressed onone sidek of the plate being narrower than those (43) pressed on theother side thereof. A reinforcing strip. All is, therefore, secured; tothe narrower corrugations and is of an area so that the material' on0h90" site sides ofA the neutral axis is equal, thereby equalizing thestrength of the panel.

Fig- 13 shows. an adaptation of the invention wherein it is used as ameans to secure a 'placard board to the corrugated wall of a car. Inthis view the reinforcing strip 45 is wide-1' than the oorrugationtowhich it is attached sov that the sides of said strip 45 provide ameans through which holding bolts 4e may extend to thereby hold such aboard 41 to the wall. Similarly on the inside of the wall, a reinforcingstrip wider than the corrugation, may hold a nailing strip 48 to whichthe car lining 49 may be attached.

In Fig. 14 I have shown the ends of the reinforcing strips 50, such asshown in Fig. 12, as materially reinforcing the corner post of the car,in that said strips extend from one flange to the other ange 52diagonally, as at 53, thereby forming in efect a triangular corner postwhich is much stronger than a rectangular one, as, for a triangular postto fail one of its sides must collapse. Furthermore, the ange 54 of thecorrugated plate extending around the corner and being secured to saidarms 5| and 52 forms an arch which also reinforces said corner poststructure.

Fig. shows a manner of attaching the reinforcing strips shown in Fig.11, those 55 on the outside of the car end 56 curving around the archflange of said end and being secured therewith to the flange 5l of thecorner post, whereas the reinforcing strips 58 on the inside of the carend are secured therewith to the flange 59 of the corner post.

The accompanying drawings illustrate the preferred form of theinvention, though it is to be understood that the invention is notlimited to the exact details of construction shown and described, as itis obvious that various modifications thereof, within the scope of theclaims, will occur to persons skilled in the art.

I claim:

1. Reinforcing means for a wall for a railway car having spaced framemembers each comprising angularly disposed arms, a wall sheet havingmarginal anges each formed on a radius and secured to both arms of oneof said frame members, respectively, to form an arch therebetween, saidsheet formed with a plurality of substantially parallel corrugationswhich extend around the corners of the car and merge into said flanges,said reinforcing means comprising a member disposed longitudinallywithin one of said corrugations and extendable between said framemembers and adapted to be secured to both arms of both frame members.

2. Reinforcing means for a wall for a railway car having spaced framemembers each comprising angularly disposed arms, a wall sheet havingmarginal flanges secured to both arms of one of said member members,respectively, to form a box structure, said sheet formed with aplurality of substantially parallel corrugations which extend around thecorners of the car and merge into said flanges, said reinforcing meanscomprising a separate T-sh-aped member disposed longitudinally withinone of said corrugations extendable between said frame members and theange of said member adapted to be secured to both arms of both framemembers and extend diagonally therebetween and the stem of the T-shapedmember secured to the corrugation.

3. Reinforcing means for a wall for a railway car having spaced framemembers each comprising angularly disposed arms, a wall sheet havingmarginal flanges each formed on a radius and secured to both arms of oneof said frame members, respectively, to form an arch therebetween,

said sheet formed with a plurality of substantially parallelcorrugations which extend around the corners of the car and merge intosaid flanges, said reinforcing means comprising a separate T- shapedmember disopsed longitudinallywithin Y one of said corrugationsextendable between said frame members and the flanges of said memberadapted to be secured to both arms of both frame members and extenddiagonally therebetween and the stem of the T-shaped member secured tothe corrugation.

4. Reinforcing means for a wall for a railway car having spaced framemembers each comprising angularly disposed arms, a wall sheet havingmarginal flanges, each secured to both arms of one of said framemembers, respectively, to form a box structure, said sheet formed with aplurality of substantially parallel corrugations which extend around thecorners of the car and merge into Vsaid flanges, said reinforcing meansAcomprising a separate member disposed longitudinally within one of saidcorrugations and extendable between said frame members and adapted to besecured to both arms of both frame 1 members.

5. Reinforcing means for a wall for a railway car having spaced framemembers each comprising angularly disposed arms, a wall sheet havingmarginal anges each formed on a radius and secured to both arms of oneof said frame members, respectively, to form an arch therebetween, saidsheet formed with a plurality of substantially parallel corrugationswhich extend around the corners of the car and merge into said anges,said reinforcing means comprising a separate member disposedlongitudinally within one of said corrugations and extendable betweensaid frame members and adapted to be secured to both arms of bothy framemembers and extend diagonally therebetween.

6. A wall for a railway car, said wall comprising a metallic plateformed with a plurality of substantially parallel corrugations whichproject alternately in opposite directions from the neutral axis planeof the plate, said corrugations merging into said plate adjacentopposite edges thereof, and separate reinforcements each having a stemdisposed longitudinally within and at substantially right angles to someof said corrugations, the stem of each of said reinforcements being cutaway at spaced intervals for welding therebetween to said corrugations.

EARL R. SWANSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,465,501 Van Dorn Aug. 21, 19231,813,537 Gilpin July 7, 1931 1,868,134 Bonsall July- 19, 1932 2,074,433Schlesinger Mar. 23, 1937 2,074,439 Tangerman Mar. 23, 1937 2,185,168Gumper et al Dec. 26, 1939 2,255,900 Schlesinger Sept. 16, 19412,311,501 Zoldok Feb. 16, 1943 2,323,446 Boswinkle July6, 1943

